Image Compressor
Reduce image file sizes with ease. Drag and drop images, adjust compression settings, and download individually or as a ZIP file.
Drag & Drop Images Here or Click to Select
Reduce image file sizes with ease. Drag and drop images, adjust compression settings, and download individually or as a ZIP file.
Drag & Drop Images Here or Click to Select
Quick answer
To compress an image, re-encode it at a lower quality or smaller size to cut its file weight. This tool does it entirely in your browser, so your JPG, PNG, or WebP photos are never uploaded to a server.
Last updated: July 2026 · Free · Runs entirely in your browser
Drag in a JPG, PNG, or WebP, choose the quality you want, and download the smaller file. It takes a couple of seconds and runs entirely in your browser, so nothing is uploaded and your original stays on your device.
Images are usually the heaviest thing on a web page, and heavy pages load slowly. A page that loads in about one second holds far more visitors than one that takes five, and every extra second costs you conversions. Compressing also helps you beat email attachment limits, save storage, and upload faster to marketplaces and social platforms.
Many online compressors upload your photos to their servers. This one does not. Everything happens locally in your browser, so your images never leave your device. That matters for personal photos, client work, and anything confidential.
Need a different file type instead of a smaller one? Use the image format converter, or read why speed matters in your images are quietly killing your sales. Browse all free tools.
It is free, needs no account, keeps your files private, and lets you decide the balance between size and quality. No watermarks, no upload, no catch.
Sharing these photos? Check what they reveal first with the EXIF viewer and remover. Photos often carry the GPS coordinates of where they were taken.
Client-side image compression utilizes modern browser-native graphics APIs—including HTMLCanvasElement, OffscreenCanvas, and createImageBitmap()—to downscale, resample, and re-encode high-resolution images directly in hardware memory. By avoiding cloud server uploads, users gain instant processing speed while retaining complete confidentiality over sensitive documents, contracts, and private photographs. For web publishers, aggressive image payload optimization is the single highest-leverage lever to pass Google Core Web Vitals Largest Contentful Paint (LCP) audits.
In modern web performance engineering, images account for over 60% of total downloaded bytes on average web pages. When a visitor loads a page, the browser's rendering engine must fetch, decode, and paint the hero media element. Google's search algorithms quantify this via Largest Contentful Paint (LCP):
Understanding the physics of image compression ensures the correct balance between visual clarity and file size reduction:
| Format | Compression Algorithm | Transparency (Alpha) | Typical Size Reduction | Primary Production Use Case |
|---|---|---|---|---|
| WebP | VP8 intra-frame predictive coding | Yes (Lossy & Lossless) | 25-35% smaller than JPEG | Modern responsive web pages, blog heroes, e-commerce |
| JPEG / JPG | Discrete Cosine Transform (DCT) | No | Standard baseline (60-85%) | Universal legacy compatibility, camera photography |
| PNG | 2D predictive filter + DEFLATE | Yes (8-bit / 24-bit) | 10-25% reduction | UI screenshots, diagrams, transparent graphics |
| AVIF | AV1 keyframe compression | Yes | 50% smaller than JPEG | Next-gen cutting-edge web delivery (high CPU encode) |
Traditional "online image compressor" services upload your files to their private cloud servers where images may be cached on disk, subjected to machine learning training, or vulnerable to server breach. BeginThings operates differently:
FileReader or URL.createObjectURL().URL.revokeObjectURL(), purging all pixel data from browser memory.No. All compression, resizing, and format conversions occur 100% locally inside your web browser using HTML5 Canvas APIs. Your files never leave your computer or smartphone.
For web and blog publishing, a quality level between 80% and 85% is ideal. This reduces file size by 70% or more while retaining visually indistinguishable sharpness on high-density Retina and mobile displays.
WebP is the recommended modern standard. It provides 25% to 35% smaller file sizes than JPEG at the same visual quality level and supports alpha transparency. WebP is supported across all modern browsers including Chrome, Safari, Edge, and Firefox.
Upload your image and adjust the quality slider downward (e.g. to 60-70%) while checking the real-time file size indicator. If the file is still above the limit, reduce the maximum pixel width to 1200px or 1600px, which drastically slashes file size without noticeable loss for document viewing.
Yes. When an image is rendered onto an HTML5 Canvas and re-encoded, EXIF metadata—including GPS coordinates, camera serial numbers, and capture timestamps—is automatically stripped, protecting your personal privacy when sharing images online.